/Engine/Source/Runtime/Engine/Classes/Exporters/Exporter.h
Export the given object to a file. Child classes do not override this, but they do provide an Export() function to do the resource-specific export work.
1 if the the object was successfully exported, 0 if a fatal error was encountered during export, or -1 if a non fatal error was encountered
static int32 ExportToFileEx ( [FExportToFileParams](API\Runtime\Engine\Exporters\UExporter\FExportToFileParams) & ExportParams )